Question 10. (10 marks). Classes and Objects. Consider the following declaration

Question

Question 10. (10 marks). Classes and Objects. Consider the following declaration and implementation of the class Complex in the file Complex.h class complex t private: float* real: float* imag: public: Complex Complex(float r, float 1); float getRealQ const; float getImag const: void setReal (float r): void setImag(float i): void printO const: Now consider the implementation of the class in Complex.cpp. #include "Complex"h" #include using namespace std; Complex::ComplexO real-new float; *real = 0.0; imag = new float; *imag 0.0 complexi Comeleffloat r, float i) t real-new float; *real = r; imag new float; *imag-i; float complex: :getRea1O const freturn (*real); float complex: :getImago const (return (*imag):) void Complex::setReal(float r) t*real r;) void complex:: set!mag(float i) {*imag = i;} void Complex: :print) const ( cout exz ptnro "inag ") c endl cout

Explanation / Answer

vodafone aadhar linking

a)

on calling flip method, b is passed by reference while a is not.. hence only b's change will persist after function execution...

before function:

a = (5,4.6), b=(3.7,1.5);

in function,

y.setImag(x.getImag()) => b becomes (3.7, 4.6)

So after function, output will be:

a: (5,4.6)

b: (3.7,4.6)

b)

Each complex object is created using new operator for real and imaginary float parts.. Hence for 2 objects, 4 floats memory leak.. along with that 2 complex objects are created which were also not made free.. hence memory leak for them too.

c)

declaration:

void freeRealPart();

void freeImagPart();

Implementation:

void Complex::freeRealPart() {

free real;

}

void Complex::freeImagPart() {

free imag;

}

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